Idaho Springs, CO Weather & Growing Conditions
Tonight
37°F
Mostly Clear
Mostly clear. Low around 37, with temperatures rising to around 39 overnight. West southwest wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Mostly Clear | 5 mph WSW | 14% |
| Sunday | 67°F | Sunny | 5 to 12 mph W | 14% |
| Sunday Night | 33°F | Mostly Clear | 2 to 6 mph WNW | 7% |
| Monday | 69°F | Sunny | 3 to 10 mph NNW | 4% |
| Monday Night | 37°F | Partly Cloudy | 1 to 9 mph S | 3% |
| Tuesday | 72°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph NW | 33% |
| Tuesday Night | 39°F | Chance Showers And Thunderstorms then Mostly Cloudy | 7 mph SW | 27% |
| Wednesday | 71°F | Partly Sunny then Chance Showers And Thunderstorms | 8 mph W | 37% |
| Wednesday Night | 39°F | Mostly Cloudy | 7 mph WNW | 11% |
| Thursday | 70°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph ENE | 20% |
| Thursday Night | 40°F | Chance Showers And Thunderstorms | 3 to 8 mph SSW | 25% |
| Friday | 70°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 8 mph SSW | 55% |
| Friday Night | 41°F | Chance Rain Showers | 5 to 8 mph SW | 36% |
| Saturday | 71°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 to 10 mph WNW | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Idaho Springs, CO
Last spring frost
May 30
First fall frost
Sep 19
Growing season
112 days
Hardiness zone
5b
Explore more for Idaho Springs, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Georgetown, Co (5.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.